Snap fastener socket



March 21, 1933. v V D'YJANES I r 1,902,557

SNAP FASTENER SOCKET Filed June 20', 1932 INVENTOR Patented Mar. 21 1933UNITED STATES PATENT OFFICE EDMUND D. JANES, 0F WATERBURY, CONNECTICUT,ASSIGNOR 'I O SCOVILL MANU- FACTURING COMPANY, OF WATERBURY,CONNECTICUT, A CORPORATION OF GON- NEGTIOUT SNAP FASTENER SOCKETApplication filed June 20,

This invention relates to an improved snapfastener socket of very simpleconstruction, and, although adapted for general application, it isparticularly suited for use as a slide which maybe adjustably secured toone end of a strap.

One object of the invention is to provide a two-piece snap fastenersocket, the studengaging element of which consists of a simple piece ofsheet-metal placed within a perforation in a sheet-metal body portionand having portions turned outwardly in opposite directions into anoverlapping relationship with respect to parts of the opposite surfacesof the body portion immediately surrounding the perforation, theclearance between the stud-engaging ring and the body portion beinglimited to an amount such as will no more than allow for the necessaryexpansion of the ring to permit it to be snapped over the stud, therebypreventing the ring from being overstrained by abnormal expansion.

Another object of the invention is to provide a simple two-part snapfastener socket having a resilient element to engage with acomplementary stud and slotted portions by means of which the socket maybe adjustably secured at any desired position along a strap.

In the accompanying drawing illustrating the invention in its preferredform;

Figure 1 is a plan view of a socket embodying the invention in a formadapted for attachment to a strap.

Fig. 2 is a longitudinal sectional View of the socket illustrated inFig. 1, the socket being indicated as having been secured to a strap andsnapped over a complementary stud element.

Fig. 3 is a plan view of the body portion of the socket ready to receivethe resilient stud-engaging element.

Fig. 4 is a plan view of one form of a partly-completed stud-engagingelement adapted to be mounted in the body element of Fig. 3 to produce asocket like that illustrated in Fig. 1.

Fig. 5 is a cross-sectional view of the partly-completed stud-engagingshown in Fig. 4.

element 1'5"; Serial No. 618,196.

Fig. 6 is a cross-sectional view through the resilient stud-engagingringof the socket and adjacent part of the body portion, a pomplementarystud being outlined in broken mes.

The preferred form of the invention herein illustrated comprises asheet-metal body portion 20, having a perforation 21 therein withinwhich is mounted a resilient studengaging ring 22. One manner of makingand assembling the ring 22 with the body portion 20, as hereindisclosed, consists in producing a flanged split ring 23 (Figs. 4 and 5)comprising a cylindrical element 2 of slightly smaller diameter than theperforation 21 in the body element and an out-' wardly-extending flange25. This element may be slipped into the perforation 21 from one side ofthe body portion 20, after which a part of the cylindrical element 24may be turned outwardly to produce a second flange 26, leaving a portion27 of the cylindrical element to pass through the perforation 21 andunite the two flanges.

In designing the parts of the socket it is important that the dimensionsof the perforation 21 and the resilient stud-engaging ring 22 be soproportioned that the clearance between the portion 27 (Fig. 6) of thering and the opposed parts of the body portion 20 immediatelysurrounding the same shall be only sufficient to allow for the necessaryexpansion of the ring when it is snappedover a complementary stud 28. Bythus limiting the size of the perforation with respect to the part ofthe ring which passes through the perforation, any undue straining ofthe ring by abnormal expansion is prevented and a firm engagement withthe stud assured.

If desired, the body portion of the socket may be of the form of abuckle and may have slots 29 through which a strap 30 (Fig. 2) may bepassed, thus affording means whereby the socket may be adjustablysecured at any point along the strap. Spurs 31 may also be providedalong an edge or edges of one or more of the slots to engage thematerial 'of the strap and more securely hold the socket in any desiredposition of adjustment. When made in the form herein illustrated it willbe observed that the entire socket slide consists of but two parts,

one part adapted to be secured to a strap and the other part adapted toyieldingly engage and hold the stud of a complementary fastener element.

The marked simplicity of the above-described fastening element tends tomaterially reduce the cost of construction without sacrificing suchimportant factors as eificiency, durability or appearance.

The invention is not intended to be limited to the specific form hereinselectedfor purposes of illustration but should be regarded as includingmodifications and variations thereof within the scope of the appendedclaims.

What is claimed is 1-- 1. A detachable snap fastener comp-risin a studelement having an attaching hea and a two-part socket element consistingof a perforated sheet-metal body portion and a restricted, resilient,expansible stud-engaging portion in the form of a split ring having aneck portion extending through the perforation in the body portion andoutwardly-turned portions overlapping parts of the opposite surfaces ofthe body portion immediately surrounding the perforation, the diameterof the perforation in the body portion being equal to the diameter ofthe head of the stud plus twice the thickness of the material of theneck portion of the split ring plus a minimum necessary workingtolerance.

2. A detachable snap fastener comprising a stud element having anattaching head and a two-part snap fastener socket and slide consistingof a perforated sheet-metal body portion and a restricted, resilient,expansible stud-engaging portion in the form of a split ring having aneck portion extending through the perforation of the body portion andoutwardly-turned portions overlapping parts of the opposite surfaces ofthe body portion immediatelysurrounding the perforation, the diameter ofthe perforation in the body portion being equal to the diameter of thehead of the stud plus twice the thickness of the material of the neckportion of the split ring plus a minimum necessary working tolerance,the body portion having slots whereby it may be adustably secured to astrap.

In witness whereof, I have hereunto signed my name.

EDMUN D D. JANES.

